Divisional feeder



Jan. 7, 1936. Q R H|Lll s i DIvIsIoNAi. FEEDER Y File@ Jan. ze; 1s4 2 sheets-sheet 1 FG `7 Fr G. 2.

Y j tixe- HIIIB/ nul-'n HIIIIB lullin A El III-l j l i l' ATTORNEYS? Patentedl Jan. 7, 1936 UNITED STATES, .PATENT oFFicE n Divisional. `vitamin n novia n. muis, peti-oit, Mien., amor, by memo assignments, to Trabon Engineering tion, Cleveland, Ohio, a corporation of Ohio Appllcationjanuarrz, 1934', Serial No. 798,353

s- (ci. fc4-Jn 4 The presentinvenuon pertains to o. divisioni Aprovided 'with on inlet port s `opening into the" feeder for a centralised lubricating system.

Prior to this invention, feeders were provided for use in either single line or. dual line centralized lubricating Systems but were so designed as to require the lubricant to enter the feeder through -rst one and than anotherport or they were so designed as to dischargel the f lubricant through the same discharge port to the bearing.

No feeder that I am aware of was so constructed that lubricant under pressure always entering the feeder throughthe same inlet port could be discharged alternately and automatically through a plurality of separate' ports.

The main object of my invention is the provision of a feeder which will always receive lubricant through the same inlet port and will discharge it automatically and alternately ,through on:ts and then another of a plurality of separate A further object of my invention is the provision of adivi'sional feeder which is simple and cheap to manufacture and is durable.

-A further object of my invention is the provision of means in such a feeder which will prevent the pistons from becoming inoperative `due to stopping on dead center.

These and other objects auxiliary thereto win `appear from the following description of my in- 1 vention and more particularly pointed out in the appended claims, reference being had to sthe drawings in which:

Figure l is a sectional on line l--l of Fig. 2 showing twopiston rods in their extreme left position.

Fig. 2 is a cross section taken on line 2--2 of Fig. 3 is a section taken'on line 3-.3 of Fig. 4 showing the upper piston rod at the extreme right position and the lower one in its extreme lleft position.

Fig. 4 is a section taken on line l-I of Fig. 3.

Pig. 5 is a section taken on line I-l of Fig. 2 showing both piston rods attheir extreme right Fig. s'is o section :einen on une s-.aor Figs Y showing the upper pistonat its extreme left position and the lower pistonat its extreme right position.

Fig. '1 is a sketch of -the standard type of feeder showing pipe connections v4for changing it into'a .two outlet feeder.

Fig. 811s section taken on a plane through the center'l of the two cylinders showing a modified form of my invention by which a three outlet feeder may be provided.

cylinders 2 and l respectively, the ends of which f view of a feeder taken it mayreach into the groove of a piston in one cylinder. while contacting the hub of the piston (30ml-a- HEISSUED central portion of the cylinder I.

having a plurality of pistons or piston valves, the piston rod in cylinder '2 being designated `by the numeral 6 and the piston rod in cylinder 3 being designated by the numeral 1.V 1 The central portion of the piston rod 8 has an enlarged hub 9 with bevel edged grooves I0 and Il on either side, all for a purpose hereinafter to be designated. Next to the grooves I0 and il' are theinner pistons I2 and l2. Located near the ends of piston rod .0 are the outer pistons Il and l5.

Similarly, I1 with bevel edged grooves Il and Il on either side. Next to the grooves M and I9 are 4the inner pistons 20v and 2|. Located near the ends of piston rodl 1 are the outer pistons 22 and 23.

The ends of both of the cylinders 2 and 3.

From the ends of cylinder 2 are ducts 24 and 25' connecting to intermediate sections of cylininder 3 to intermediate sections of cylinder 2.

' f I provide a' cylindrical passage 28 between cylinders 2 and 2 in which is located a cylindrical 'piston rod lhas an enlarged hub`15 der 3 and Vducts 26 and 21 from the ends of cylstop 2s havingbeveied ends and with a einen 3 by-pass'groove Il along one side.

This stop member 29 acts in conjunction'with the hubs! and l1 and the adjacent grooves of the respective piston rods in forming a govern- 4ing device which prevents' the piston rods from moving at the same time, thereby avoiding failure of operation which might otherwise result if the fluid pressure should be discontinued while Y the piston rods were passing dead. center.

The stop member is not intended to block the passage 28, but, on the contrary, lt is to be made in any manner.'which will permit fluid to now through the central passage directly or through the stop member itself from one cylinder to the other, hence it may be pierced either through center or on its side as shown, or it may be .made in spider form, but it must be of a length greater than that cir the passageway 2l,- so that other oylinder, and vice versa. My divisional feeder will voperate without the stop member, but it is not as eiilcient. since the piston rods sometimes stop on dead center when feederwill not operato until at least o ne plug is removed and a piston valve adjusted, unless as its ' the pressure pump or-other power means stops,

"and when the power means is again started. the

' are oioeoa'wiui plugs s nase The feederA is piston valve from dead center.

. sometimes happens, a'sudden jar displaces-one w less of their location, and the other discharge ports being located in similar relationship to the respective adjacent pistons.

' Numeral 38 indicates holes used for mounting or fastening the feeder body support.

In the case of Fig. '1, discharge ports 3l and to amr convenient 33 are connected together and32 and 34 likewise, thereby making two discharge outlets 35 and 33. Piping connections are indicated here but suitable passages throughv the feeder body may be. drilled or otherwise provided to connect discharge ports 3| and 33 into one outlet 35 an ports' 32 and 34 into one outlet 38.

In Fig. 8, discharge ports 3| and 32 are connected to form one'outiet 31. This is here indi cated with piping but pes may otherwise be provided through the feeder body.

Cylinder` 3 of Fig. 8 is constructed with a'crcss sectional area equal to one-half that of cylinder 2. Thus the amount of lubricant discharged from the discharge ports 3i and 32 through the one outlet 311s equal to the amount'discharged from cylinder v2 by each of the discharge ports 80 33 and 3B.

The operation of the standard' divisional feeder as shown in Figs. 1 to 6 inclusive is as follows: Assuming that the feeder has been tilled with lubricant and thatthe moving'parts `are located at the start of operation as indicatediin Fig. l, lubricant under pressure enters inlet prt 5 and passes into cylinder 3, around groove L8,

across enlarged hub i1, around groove I8, through duct into cylinder 2, and thereby forces piston rod 3 to move to the opposite end of the cylinder 2. 'Ihis causes lubricant to be forced from cylinder 2, through-duct 23 into cylinder 3,- across piston rod 1, between pistons 23 and 22 and it is discharged through outlet portA 34. The amountaof lubricant discharged is dependent upon the area of thepiston Il and the length of the stroke of pistonrod 3, and the discharge stops when the piston rod contacts plug 4a.

During the movement of piston rod 3. piston rod 1 has been heid immovable against plug 4 o'f cylinder 3, due to the pressure of the lubricant in cylinder. 3 being communicated through paslsage 33 of cylindrical stop 28 andaround groove I3, across enlarged hub 8, around groove il, through. duct 28 intocylinder 3. 'I'his holds piston rod 1 against its plug l and it cannot move until the movement'of piston rod'3 causes ,cylindrical stop 28 to move' into groove I8 of- I8, through passage 33 on cylindrical stop 28,`

into cylinder 2, around groove I I, across enlarged hub 8, aroundgroove I3,'through duct 21 -into cylinder 3. us'forcing piston rod 1 to move to end of cylinder 3. Thisv causes lubricant to-be y orced from cylinder 3 through duct 2, across piston rod 8 and discharged through outlet port 3I.

During the movement of ,pistonwrod 1, piston 2,027,171 Numerals'3i, 32, 33 and 34 indicate the four of cylinder 2, due to the pressure ofthe lubricant in cylinder 3,' which is communicated through duct 25 into cylinder 2. This holds pis-' ton rod 6 against plug 4a until piston rod 1 i reaches the end of its stroke.

All parts are now in the position shown' in Fig. 45. 'Ihe lubricant entering through inlet port 5 passes into cylinder 3 around groove I8, across enlarged hub I1, around groove I8, through duct 23 into cylinder 2 and thereby forces piston rod 3 to move to the opposite end of cylinder 2. This causes lubricant to be forced from cylinder 2 through duct 25 into cylinder 3, across piston rod 1, between pistons 2l and 23 and to be discharged through outlet port 33.'

During the movement of piston rod 3, piston rod 1 has been held immovable against plug 4a of cylinder 3 due to the pressure of the lubricant in cylinder 3 being communicated through passage 33 of cylindrical-stop 28 `and around groove 20 4I I, across emerged hub 8, around groove I3, through duct 21 into cylinder 3. 'I'his holds piston rod 1 against plug 4a until piston rod 6 reaches the end of its stroke.

All parts are now located as shown in Fig: 6. 25 The lubricant, entering through inlet port 5, passes into cylinder 3, around groove I8, through passage 33 on cylindrical stop 28 into cylinder 2, around groove I3, across enlarged hub 9, around groove II,`through duct 26 into cylinder] 3, thus 30 forcing piston rod 1 to move to the-opposite end of cylinder 3. This-causes lubricant vto be forced from cylinder 3 through duct 21 into cylinder 2, acrs piston rod 6 and discharged through outlet port 32. 35

During the movement of piston rod 1,l piston rod 8 has been held immovableagainst plug 4 of vcylinder 2, due to the pressure of the lubricant C in" cylinder 3 which is communicated through duct 23 into cylinder 2. 'Ihis holds piston rod 3 against 40 plug Il until piston rod 1 reachesthe end of its stroke when its end butts up against plug 4.

All parts are now located as shown in Fig. '1. The divisional feeder is'now ready to repeat the cycle of operations above described as many times 45 as may be desired and dependent only upon the continued supply.' of lubricant under suitable pressure to the inlet port 5. 'I'he function of the cylindrical. stop 28 in conjunction with the grooves I3 and II and enlarged hub 8, of piston 5 rod/8 and with the grooves I8 and I8and the,

enlarged hub I1, of piston rod 1, is to prevent either one of the piston rods 8 or 1,. when.once in' motion, from stopping before reaching the end ofits stroke. `In case one of the piston rods should stop in the middle of its stroke due to the interruption of the supply of lubricant under pressure, the cylindrical stop 28 will prevent the otherJ piston from moving, when the supply of lubricant vis renewed, until the rst piston4 has -completed its stroke.

Havingv thus fully described my invention; it is understood that I do not limit myself to the embodiment shown.

vI claim: 1

l. A feeder for dividing andv distributing fluids 'comprising a body-member having a pair of cylvinders formed therein, a central passage con- -necting lsaid'cylinders intermediate their ends, an inlet port' in oneof said Jcylinders, two dis- 70 charge ports in each cylinder, one on each side of said central passage, two pairs of passages connecting the said, cylinders, each of said last named passages leading from one end of one cylinder to a point adiacentfthe entrance of the cene a,oa7,171

'respective points. of entry of the first pair-ofV passages from the4 ends ofthe rst cylinder extending beyond the opening of the central passage in the second cylinder, and the respective ,points of entry of the second pair of passages from theends of the' second cylinder being on the respective fluid under pressure entering the first cylinderthrough the inlet port and entering into the secsides of the opening of the central passage therein lnearest the end of the. cylinder from which they lead, a. reciprocating piston rod ineach cylinder, and four substantially equally spaced-apartl piston-type valveson'each piston rod, the spacing` of said valves on each rod controlling the flow of fluid through the feeder, permitting now of ond cylinder through the central passage to pass from the second 'cylinder into the first cylinder, alternately, through the first pair ot passages to one end of the n rst cylinder, while the other of the first pair of. passages is in vcommunication with a discharge port in the second cylindenthe pis- `ton type valves on the piston rod in the first cylinder alternately establishingcommunication'between the inlet andsecond pair of passages at respective ends of the stroke of said piston rodand simultaneously establishing communication between a discharge' port in the first cylinder and the other of the second pair of passages, each of the passages of said rst and second pair acting at one time as an inlet port to a cylinder end permitting fluid to shift the pistonrod in its respective cylinder to the opposite end and to hold it `there until-the piston in the other cylinder shifts and, on the return stroke of the piston,v acting as a discharge passage for the uid in front of the fpiston rod discharging the fluid to a discharge port -in the other cylinder.

2. A feeder for dividing and distributing uids comprising a' body-member having a pair of cyl'- inders formed therein, a central passage connectlng said cylinders intermediate their ends, an inlet port in one of said cylinders, two discharge ports in each cylinder, one on each side of said central passage, two pairs of passages connecting the said cylinders, each of saidlast named passubstantially equally spaced-apart piston-type l valves on each piston rod, said valves.controlling `sages leading from one end of one cylinder to a point adjacent the entrance ofthe central passage ini-the other cylinder and between vsaid cen' thral passage and a discharge port, the respective -points of entry of the ilrst pair of passages from the endsrof the `first cylinder extending beyond the opening of the central passage in the second cylinder, and the respective pointsof entry of the second pair of passages fromv the ends of the second 'cylinderb'eing on the respectivesides of the opening of the central passage therein nearest i the end of the cylinder from which they-lead, a reciprocating piston rod,in each cylinder, ifour the flow of fluid through the feeder, vpermitting I flow of fluidy under pressure entering the first cylinder ithrough the inlet port and entering into thefsecond cylinder through the central passage to pass from the second cylinde'rinto the first` cylinder, alternately through therst pair.. of passages to" one endjof the rst cylinder,`while the other ofthe nrstpair of is in communication with a discharge port in the second cylinder, the piston type -valves on the piston rod in the first cylinder alternately establishing communication between a discharge port in the first cylinder yand the other of the second pair of 5 passages, each ,of the passages of said first and second pair acting at one time as an inlet port to a cylinder end permitting fluid to shift the piston rod in its respective cylinder to the opposite'end and to hold, it there until the piston in l0 the' other cylinder shifts and, on the return stroke of the piston, acting as a discharge passage for the iiuid in front of the piston rod discharging the uid to a discharge port inthe other/cylinder, and meansV for preventing movement of both l5 piston rods at the same time.l

3. A feeder for dividingand distributing fluids comprising a. body-member having a pair of cylinders formed therein, a central passage connecting said cylinders intermediate their ends, an inlet port in one of said cylinders, twodischarged ports in each cylinder, one on each side of said central passage, two pairs of passages connecting the said cylinders, eachof said last named passages, leading from one end of one cylinder to a point adjacent the entrance of the central passage in the other cylinder and between sald-central passage and a discharge port, f

' the respective points of entry of .the first pair of passages from the ends of the first cylinder extending beyond the opening of thecentral passage in the second cylinder, and the respective 'points .of entry of the second pair of passages to pass from the second cylinder into the rst cylinder,alternately through the first pair of passages to one end of thefirst cylinder, while the other of the first palrof passages is in communication with a'dlscharge' port in the second cylinder, the pistonV type valves on the piston rod in the first cylinder alternately establishing communication between the' inlet and second pair of passages at respective ends of the stroke of said piston rod and simultaneously establishing communication between a dischargehport in the rst cylinder and the other of the second pair of passages, each of the passages of said rstand second pair acting at one time as an inlet port toa cylinder end permitting fluid to shift the piston rod. in its respectivecylinder to the op- 00 posite end and to hold it thereuntil the piston in the other cylinder shifts and, on .the return stroke of the piston, acting asa discharge passage for the fluid in front4 of the piston rod disc i charging the fluid to a discharge port in-the other 65 cylinder, an enlarged hub at the center of each piston rod, two circumferential grooves on each piston' rod, one on each side of said hubs, and a member mounted to reciprocate in said central Y passage without stopping flow of uid there- 70 vthrough and having a length sumcient to prevent movement of both of said piston rods at the same time., DAVID R. HILLIS. 

